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WelcomeDesignedbyAnnieSubjectclausesCanyoutellmewhat’syourdream?_________________ismydream.ThatIcanflyShanghaiWorldExpohasopened.Itwilllastfor184days,fromMay1sttoOctober31th.ThatthethemeoftheExpois“bettercity,betterlife”isknowntous.TheMascotoftheExpoisHaibao.Whatwehaveknownisthatitisheldinthedevelopingcountryforthefirsttime.TherearemorethantwohundredcountriesandinternationalorganizationsattendingtheExpo.Itissaidthatwecantravelallovertheworldjustinoneday.It'salsoagoodchancetoshowthegooddevelopmentofChina.IntroductionThatthethemeoftheExpois”bettercity,betterlife”isknowntous.Whatwehaveknownisthatitisheldinthedevelopingcountryforthefirsttime.Itissaidthatwecantravelallovertheworldjustinoneday..Dothesesentenceshaveanythingincommon?-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------主语从句subjectclauseWhatwewilllearninthisclassisSubjectClause各种各样的主语1）Atreehasfallenacrosstheroad.2）Youareastudent.3）Toliveistolearn,tolearnistolivebetter.4）Smokingisbadforyou.5)Itiscertainthatwewillsucceed.6）Thatsheisabletocomemakesushappy.名词代词不定式动名词形式主语主语从句一、定义在主从复合句中，充当主语的从句叫主语从句。e.g.Whathedidintheearthquakemovedeverybody.主语从句谓语宾语ThatChinawillbecomemorepowerfuliscertain.主语从句谓语表语ConjunctionsofsubjectClauses(引导主语从句的关联词):从属连词(不作成分）连接代词（作各种成分）连接副词（作状语）what,who,whom,whose,which,wh+everthat,whether,if，when,where,how,why7二、引导主语从句三大连接词：1、从属连词：that,whether,ifthat无词义,在从句中不作成分，但不能省略whether意为“是否”，在从句中不作成分，但不可省略e.g.shegotthefirstprizemadeherparentsveryhappy.shewillcomeornotisstillaquestion.无义是否ThatWhetherwhether引导的主语从句,如果用了形式主语it,引导词whether可以换成if,如果whether从句在句首或后面有ornot时,不能换成if.Whethertheywillsellthehousehasnotbeendecidedyet.Ithasnotbeendecidedyetwhethertheywillsellthehouse.不可用if替换可用if替换注意练一练1、_________wegotherebytrainorbyairisnotclear.2、______shelefthimmadehimverysad.WhetherThat2、连接代词：连接代词中文意思在从句中的成分who/whom__whoever______what__________whatever_______which______whichever________whose____不可省略谁不论谁什么\什么事无论什么哪一个无论哪一个谁的主语宾语表语定语定语e.g.Whateveryoudoshoulddonoharmtoothers.无论你做什么都不应该伤害别人。Whoeverwilltakehisplaceisnotimportant.无论谁将代替他并不重要。练一练1、_________willhostthemeetinghasn’tbeendecided.2、________carrunsfastershouldbetested.3、________comestoourschooliswelcome.4、________sidewillwinisnotclear.WhoWhoseWhoeverWhich3、连接副词：连接副词中文意思在从句中的成分whenwherewhyhow不可省略什么时候在哪里为什么怎么样，如何时间状语地点状语原因状语方式状语练一练1、_____hedidn’tcomeyesterdayisunknown.2、____________wewillsetupthefactoryshouldbediscussed.3、__________thishappenedisnotclear.WhyWhen/WhereHow/Why“缺什么补什么”原则缺主语，指人用who，指物用what缺宾语，指人用whom/who，指物用what缺时间状语用when；地点状语用where；原因状语用why；方式状语用how；定语用whose或which什么都不缺用that或whether/if（是否）16三、用it作形式主语的主语从句常用句型如下：It+is+名词+that从句It+is+形容词+that从句It+is+过去分词+that从句It+不及物动词+that从句It+及物动词+宾语+that从句注解：一般来说主语从句都是放在,但有时为了使句子,避免”头重脚轻”,常用作，从而把主语从句放在．句首保持平衡it形式主语后面1)Itis+n.+thatItisapity/shamethat...Itisasurprisethat…Itisafactthat…Itiscommonknowledgethat…*_______________(很可惜)welostthematch.*______________(这是事实)hecheatedintheexam.ItisapitythatItisafactthat可惜的是……令人吃惊的是…事实是……是常识2)Itis+adj.+thatIt’scertain/surethat…Itispossible/likelythat...Itisobvious/clearthat…Itistruethat…*_______________(很可能)shewillcomebacktomorrow.*_______________(很明显)heisanEnglish.ItispossiblethatItisobviousthat肯定…很可能……很明显…的确…3)It+be+过去分词+从句Itissaidthat...Itisknowntoallthat...Itisreportedthat...Itisbelievedthat...Itissuggestedthat+(should）do...*_________________(据报道)20peoplewerekilledintheaccident.*__________________(建议)weshouldeatmorevegetableanddomoreexercise.ItisreportedthatItissuggestedthat据说……众所周知……据报道……据相信……;人们相信……建议……4)It+不及物动词+thatIthappenedthat...Itoccurredtomethat…Itappears/seemsthat…Itturnedoutthat…*________________(刚好)Iwasoutyesterday.*____________________(我突然想起)Iforgottosenttheletter.IthappenedthatItoccurredtomethat碰巧……我突然想起…似乎，好像…原来…5)It+及物动词＋宾语+that从句Itworriedherthat…Itshocked/surprisedmethat….*____________________(让我吃惊的是)shetreatedintheexam.Itsurprised/shockedmethat让她担心的是…让我震惊的是…1、Thatwecan’tgotoseethemovieontheweekendisapity.2、Thathismemorywasbecomingworseworriedhimalot.Itisapitythatwecan’tgotoseethemovieontheweekend.Itworriedhimalotthathismemorywasbecomingworse.用it作形式主语来改写下面的句子改错1、Thatiswidelybelievedthatsmokingcancausecancer.2、Itissuggestedthatwewillholdameetingnextweek.It（作形式主语）解析：过去分词如果是suggested,ordered,requested等表示建议，命令，请求等的词时，主语从句应用虚拟语气，即“(should)+动词原形”(should)hold四、主语从句中应注意的问题1、从句的语序要用陈述句的语序。e.g.remainsamystery.他为什么做那件事依然是个谜。Whyhedidit2、从句做主语时，主句谓语动词的单复数①单个主语从句做主语时，谓语动词用单数e.g.Whenweshallhaveoursportsmeetingnotbeendecidedyet.②由两个或多个连接词引导一个主语从句时，谓语动词也用单数e.g.Whenandwhereweshallhaveoursportsmeetingnotbeendecidedyet.hashas③如果用and连接两个或两个以上的主语从句做主语时，谓语动词用复数e.g.Whentheywillstartandwheretheywillgonotbeendecidedyet.have注意what和who引导主语从句时，主句谓语的数应与主句中作表语的名词保持一致。WhatIneed______money.WhatIneed______books.isareWhoyouwillgowith______Lucy.Whoyouwillgowith______thetwins.isare练习1.___leavestheroomlastoughttoturnoffthelight.A.AnyoneB.ThepersonC.WhoeverD.Which2.___hehasbecomearichmanisknownt